body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Dashboard

GM

Glencoe Math: Course 2, Volume 1 View details

2. Percent and Estimation

Finish the assignment

Continue to next subchapter

Exercise 2 Page 114

Round each number and multiply.

About 400

Practice makes perfect

We want to estimate 79 % of 489. Let's start by rounding each number. rcl 79 % & ≈ & 80 % [0.3em] 489 & ≈ & 500 Now we multiply 80 % by 500 to get an estimation. First, we write the percent as a fraction.

80 %* 500

▼

Write the percent as a fraction

WriteAsFrac

Write as a fraction

80/100 * 500

ReduceFrac

a/b=.a /20./.b /20.

80÷ 20/100÷ 20 * 500

CalcQuot

Calculate quotient

4/5 * 500